Porosity of acid activated Porto Santo bentonites assessed by n-nonane pre-adsorption and nitrogen adsorption - Ribeiro Carrott, M.M.L.; Cansado, I.P.P.; Russo, P. A.; Carrott, P.J.M.; Catrinescu, C.; Castilho, P.; Fernandes, C.; Breen, C. (2012)